About WSSC Water

We provide safe, reliable drinking water and wastewater services to 1.9 million residents in Prince George’s and Montgomery counties through approximately 475,000 customer accounts across a nearly 1,000-square-mile service area. 

WSSC Water operates and maintains more than 11,000 miles of drinking water and sewer mains. In more than a century of service, WSSC Water has never had a drinking water quality violation. 

As a not-for-profit public utility, WSSC Water is focused on serving customers, not shareholders. Every dollar collected is reinvested directly into infrastructure, technology and our workforce to strengthen reliability, improve service and protect public health for generations to come.

Our Smart One Water Mission

WSSC Water ensures all communities thrive by ethically delivering safe, reliable and sustainable water and wastewater services.

Vision

In every home, in every business, we make everything possible by ensuring access to dependable and safe water for everyday life.

Promise

Continue the legacy of treasuring our water, customers and employees through dedicated service for current and future generations.

Our Values

Just.

We make fair and purposeful decisions by valuing and including each other.

Accountable.

We take responsibility for our actions by being transparent and ethical with our decisions.

Caring.

We maintain the highest level of safety and protection for our people, community and environment.

Community-Focused. 

We are responsive to our customers' needs and the protection of our natural resources.

Excellent.

We exceed expectations and create meaningful impact through forward-thinking innovation.

Trustworthy.

We strengthen partnerships through responsible actions and honest relationships within our community.

Strategic Plan  |   A One Water Future: 90-Day Transition Report

Miscellaneous WSSC Water Facts

• Our state-of-the-art laboratory performs an estimated 500,000 tests annually to ensure water safety and quality
• View current financial information on Operating and Capital Improvements Program budgets
• Read about our Awards for outstanding achievement as a water utility

WSSC Water Operates and Maintains

• 3 reservoirs – Triadelphia, Rocky Gorge, and Little Seneca, have a total holding capacity of 14 billion gallons (Note: Jennings Randolph Reservoir holds an additional 13 billion gallons of water shared with Fairfax Water and the Washington Aqueduct).
• 2 water filtration plants – The Patuxent (max 110 million gallons per day [MGD]) and the Potomac (max 280 MGD) plants have the capacity to produce a total of 390 MGD of safe drinking water. 
• 6 water resource recovery facilities – Western Branch, Piscataway, Parkway, Seneca, Damascus, and Hyattstown with a total capacity to produce 95 million gallons of wastewater per day.
• The Blue Plains Advanced Wastewater Treatment Plant, operated by DC Water,  handles as much as an additional 169 MGD under a cost-sharing agreement with WSSC Water, treating on average approximately 65% of the Commission’s wastewater annually.
• Over 5,900 miles of water main lines and more than 5,600 miles of sewer main lines are maintained.